MUST-HAVE KIT Clairol Natural Instincts 28 Nutmeg Dark Brown ($9; clairol.com).
PRO TIP If your brown hair is dark to begin with, don’t assume black is the only way to go deeper. Unless you’re deliberately going for the Morticia
effect, “never, ever dye it black,” White says. “Black dye is too dense and
toneless. Instead, choose one of the darkest brunet kits available.”Read MoreLess
Go Lighter, Darker, Redder! Find Your Perfect Celebrity Shade